I can only add to the praise in the other two reviews. This is an absolutely magnificent example of documentary filmmaking, and I am so glad that I found it on Amazon after looking for it many other places and after having seen bits and pieces of the series on the Discovery Channel. The information in the series is organised not so much in a time line, although there is that, as subject by subject. Among the topics to be discussed are the rise of nationalism in Europe after World War I, the development of sports as big business, the great advances in medicine in the latter half of the 20th century, the emergence of Communism in China, the fall of Communism in Eastern Europe, etc. It is 27 hours of absolutely riveting television. I have watched it from start to end twice and will now put it away for a while and then watch it again - it's THAT good.